8458945 has 32 divisors (see below), whose sum is σ = 11975040. Its totient is φ = 5667840.

The previous prime is 8458921. The next prime is 8458949. The reversal of 8458945 is 5498548.

It is a happy number.

It is not a de Polignac number, because 8458945 - 2⁵ = 8458913 is a prime.

Its product of digits (230400) is a multiple of the sum of its prime divisors (225).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8458949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77551 + ... + 77659.

It is an arithmetic number, because the mean of its divisors is an integer number (374220).

Almost surely, 2^8458945 is an apocalyptic number.

8458945 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8458945 is a deficient number, since it is larger than the sum of its proper divisors (3516095).

8458945 is a wasteful number, since it uses less digits than its factorization.

8458945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its digits is 230400, while the sum is 43.

The square root of 8458945 is about 2908.4265505596. The cubic root of 8458945 is about 203.7536514332.

The spelling of 8458945 in words is "eight million, four hundred fifty-eight thousand, nine hundred forty-five".